In a blender, combine 4 cups frozen watermelon cubes, 1 cup ginger ale soda, 2 tablespoons lime juice, and 1/4 cup granulated sugar. Blend until smooth, about 60-90 seconds. Keep cold until ready to serve.
In a large mixing bowl, use a hand mixer to whip 2 cups heavy cream with 2 tablespoons powdered sugar until stiff peaks form, about 5 minutes. Keep cold until ready to serve.
After cleaning the blender, combine 4 cups frozen blueberries with 1 cup orange juice, 1 cup ginger ale soda, and 2 tablespoons lime juice. Blend until smooth. Keep cold until ready to serve.
Layer your slushies with red white and blue in any combination!
Notes
Layer it how you want and pick the order of colors that you like the best.
Like your slushies a little chunkier? Simply blend for slightly less time to keep some texture.